package com.example.rice.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.example.rice.common.R;
import com.example.rice.entity.User;
import com.example.rice.service.UserService;
import com.example.rice.utils.ValidateCodeUtils;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpSession;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@Slf4j
@RestController
@RequestMapping("/user")
public class UserController {

    @Autowired
    private UserService userService;

    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 发送手机短信验证码
     * @param user
     * @return
     */
    @PostMapping("/sendMsg")
    public R<String> sendMsg(@RequestBody User user, HttpSession session){
        //获取手机号
        String phone = user.getPhone();
        if (StringUtils.isNotEmpty(phone)){
            //生成随机的4位验证码
            String code = ValidateCodeUtils.generateValidateCode(4).toString();
            log.info("code{}",code);
            //调用阿里云提供的短信服务API完成发送短信的服务
            //需要将生成的验证码保存到Session中(phone为键，code为值)
            session.setAttribute(phone,code);
            //存入缓存,设置有效时间为1分钟
            redisTemplate.opsForValue().set(phone,code,1, TimeUnit.MINUTES);
            return R.success("短信发送成功！");
        }else{
            return R.error("短信验证失败！");
        }
    }

    /**
     * 移动端用户登录
     * @param map
     * @param session
     * @return
     */
    @PostMapping("/login")
    public R<User> login(@RequestBody Map map, HttpSession session){
        log.info(map.toString());
        //获取手机号
        String phone = map.get("phone").toString();
        //获取验证码
        String code = map.get("code").toString();
        //从session中获取验证码
        //Object oldcode = session.getAttribute(phone);
        //从redis中获取验证码
        Object oldcode = redisTemplate.opsForValue().get(phone);
        //如果比对成功，说明登录成功
        if (oldcode != null && oldcode.equals(code)){
            //当前手机号是否为新用户
            LambdaQueryWrapper<User> queryWrapper = new LambdaQueryWrapper<>();
            queryWrapper.eq(User::getPhone,phone);
            User user = userService.getOne(queryWrapper);
            if (user ==null){
                user = new User();
                user.setPhone(phone);
                user.setStatus(1);
                userService.save(user);
            }
            session.setAttribute("user",user.getId());

            //如果登录成功删除redis中数据
            redisTemplate.delete(phone);
            return R.success(user);
        }
        return R.error("登录失败");
    }
}
